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Journal of Lipid Research, Vol 28, 1241-1258, Copyright © 1987 by Lipid Research, Inc.

REVIEWS

Lipids of Paramecium

ES Kaneshiro
Department of Biological Sciences, University of Cincinati, OH 45221- 0006.

This review is the first on the composition and metabolism of Paramecium lipids. This ciliated protozoa is a useful system for studying the structure and function of biomembranes since it can be grown under chemically defined culture conditions in large numbers; much is known about its genetics, membrane electrophysiology, and ultrastructure; and mutants with defective membrane functions are available which are reported to have lipid alterations. Pure preparation of the cell surface ciliary membrane are readily isolated. The organism and its ciliary membrane contain a variety of polar lipids, sterols, and steryl esters. The polar lipids include substantial amounts of ether lipids, sphingolipids, and phosphonolipids. the biosyntheses of fatty acids and specific moieties of complex lipids in this organism are beginning to be examined with promises of elucidating biosynthetic mechanisms that are more difficult to study in other organisms. More information on lipid metabolism is required to identify the bases for the defects in putative lipid/membrane mutants.
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